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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061">Ray:</span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061"> </span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061">You are referring to a distinction between “PV Source” versus “PV Output” circuits. Unfortunately, according to the code all “PV system circuits” are considered when determining the requirement for RSS. As I see it, the disconnect you suggest does not remove the requirement for RSS if any “PV System circuit” is “installed on or in” a structure that is intended for any use in addition to housing PV equipment. This applies to a ground-mount PV array.</span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061"> </span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061">I am not arguing the requirement makes sense—I believe it does not. I am just suggesting how a literal reading of the code would be interpreted. Being able to understand this will prepare us to anticipate what a building inspector or plan checker might require.</span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061"> </span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:#254061">See text of code below.</span></p><p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061"> </span></b></p><p class="MsoNormal" style="text-autospace:none"><b><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">690.12 Rapid Shutdown of PV Systems on Buildings. </span></i></b><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">PV</span></i></p><p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">system circuits installed on or in buildings shall include a rapid</span></i></p><p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">shutdown function to reduce shock hazard for firefighters in</span></i></p><p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">accordance with 690.12(A) through (D).</span></i></p><p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">Exception: Ground-mounted PV system circuits that enter buildings,</span></i></p><p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">of which the sole purpose is to house PV system equipment,</span></i></p><p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#254061">shall not be required to comply with 690.12.</span></i><i><span style="font-family:"Verdana","sans-serif";color:#254061"></span></i></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#254061"> </span></p><div><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#254061">I would argue that if you could mount the outdoor portion of the mini-split on a backboard or pad separated even inches from the home, you would not be required to have RSS.</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#254061"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#254061">William</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">Miller Solar</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">805-438-5600</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"><a href="http://www.millersolar.com/"><span style="color:blue">www.millersolar.com</span></a></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">CA Lic. 773985</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p></div><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Ray Walters via RE-wrenches<br><b>Sent:</b> Thursday, June 19, 2025 8:34 AM<br><b>To:</b> <a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a><br><b>Cc:</b> Ray Walters<br><b>Subject:</b> Re: [RE-wrenches] EG4 Mini Split</span></p></div></div><p class="MsoNormal"> </p><p>The PV circuit stops at the PV disconnect. Put the PV disconnect on the wall before it comes in, then RSS is NOT required.</p><p>Ray Walters<br>Remote Solar</p></div></body></html>